Doorknob locking device



June 23, 1931. E. ELLINGsoN 1,310,909

'DOORKNOB LOCKING DEVICE Filed arch 5. 1929 WI @QW/; al.,

f @2. @j .14 1 l 39 l] lllllllllllll r//v l/E/v TUR ELuNe ELLINGsoN f Patented June 23, l 1931 UNITD STATES rra j orifice ELLING ELLINGSON, OF SAN FRANCISCO, CALIFORNIA noonnnore LOCKING DEVICE ppi-manon med einen 5, 1929. serial 1vo.,34i,513.

My invention relates to improvements in locking devices for door knobs and the like wherein an outer ldoor knob operates in conjunction with key actuated mechanism vfor f5 connecting or disconnecting said outer knobV to or with the inner knob whereby the locking mechanism of a door may at ail times be actuated by manual operation of the inner knob and by the outer knob when said keyv l5 infr a olication Serial No.

January 3l, 1929.

The primary object of my presentinvention is to provide an improved locking device or door knobs and the like.

Another object is to provide an'improved knob locking device wherein a locking member is normally held in locking position to prevent operation of a door latch by an out- I er knob, said locking member being movable -to imlatching position from eitherfside oi the door.

A further object is to provide an improved device of the character described which is provided with key actuated meansY for unlocking the knob from the outside of a door and provided with manually operable means vfor moving the locking vmember to an unlocking position from the inside of the door independently of the key actuated means.

device wherein the outer knob is normally locked to prevent opening of the door from the outside without interfering with the free operation of the inner knob to open the door from the'inside, and in'which the knob locking means may be released'from the inside of the door.

- A further object is to provide an improved devicel wherein a locking member normally -5 operating to lock the outer knob of a door may be moved and held in unlocking position independently of key actuated means provided for actuating said locking member from the outside of a door.

A further object is to provide improved Another object is to provide an improved features of construction whereby the operation of the locking member may be acilitated andlrendered more positive and efficient, and by which the utility of the device is extended; y

A still 'further Vobject is to provide an improved construction which is vsimple in be easily manufactured and assembled upon' a door. L n .v

I accomplish these and other objects by Y means of the improved device disclosedv in the drawings forming apart of the present application wherein like characters of reference are used to designate similar parts throughout the specification and drawings, and in which- Fig. l is a sectionalview of my invention as applied upon a door; Y

Fig. 2 isa sectional view taken at right angles to the view shown in Fig. l;

Fig. 3 is a 'section taken upon the line 3--3 of Fig. l -in the direction indicated;

Fig. 4: is a secti on taken upon the line 4.--4 or" F i0. l in the direction indicated;

Fig. 5 is a sectional view taken upon the line 5 5 of Fig. l inthe direction indicated;

Fig. 6 is a side elevation or the cam member, detached from the cylinder lock; and

`Fig.y 7 is an end elevation of the knob stemdisclosing the actuating collar thereon. j Referring to the drawings, the numeral Vl is used to designate in general a knob stem extending through an opening 2 :tormedin -a door 3, and 'having bushings i and 5 mounted upon the outer and inner ends or the stem l, preferably by means of threads 6. The' outer bushing '4t is supported within a bearing plate 7 secured upon-the outer side of the door, andthe inner bushing 5 is supported by a bearing plate 8 secured upon the inner side yof the door. j f The outer busning iis shouldered as at 9 to seat uponv the bearing portion off the bearplate 7 and grooves l1 are"formed upon diametrically opposite'sides thereof and ar ranged to register with corresponding grooves l2 formed in the bearing surface of the bearing plate 7. l

vA U shaped locking member or'bolt le' is construction and operation and which may slidably mounted within the grooves 11 of the bushing 4, said member being provided with outwardly disposed extensions 16 movable into the matching grooves 11 andV 12 to lock the bushing 4 against turning movement within the bearing plate 7 A spring 17 is mounted upon a guide 18 carried by the closed end of the member 14 and compressed between said member and the end of the stem 1 to normally move the member 14 into locking position. A collar 19 is carried by the stem 1 in slightly spaced relation to the end of the bushing 4, said collar 19 having' notches 21 formed in the edges thereof to receive the ends of the member 14 when in unlocking position. i y

The bearing plate 7 is secured -to the door by suitablescrews 22 or other suitable securing means, and is covered by means of a rosette 23 Yengaged and Yheld against turning by means of spring lugs 24 formed upon the plate 7 and engaging openings 26 formed in the back of the rosette. An annular flange 27 is formed upon the outer end of the bushing 4 to Vretain the rosette in operative position. A

. time clamp the knob against the bushing.

A cam 34 is secured upon the inner end of the cylinder of the lock 31, said cam preferably being of hollow cylindrical form-and secured in co-axial relation to the cylinder. The end of the cam is inclined and arranged to be engaged by the end` ofthe U shaped member 14 whereby a rotative movement of the cam withthe cylinder of the lock will cause the member 14 to be moved between its locking and unlockingpositions as indicated in Fig. 2 of the drawings. The cam 34 is so positioned that the end of the member 14 may extend into the hollow'ca-m when engaged by the low portion of the inclined end, and said low portion will be presented to the member 14 when the lock is in normal position to receive or permit the withdrawal of a proper key 36. The spring 17 holds the member 14 in engagement with the cam 34, and as the high portion of the cam is turned into Vengagement with the member 14, said member is moved inwardly against the pressure of said spring 17 to its .unlocking position.

A knob 37 is mounted upon the end of the stem 1 extending through theinner side .of the door. The knob37 is preferably provided with a sleeve 38 extendingV axially into the lmob from therouter end thereof1 said sleeve having a flange 39 engaging the outer end of the knob and being internally threaded at its inner end to engage the threads of the stem 1. A ridged washer 41 is fitted onto the stem 1, preferably by a square aperture adapted to prevent rotation of said washer relative Yto the stem, the ridges of the washer being engaged between corresponding ridges and grooves formed upon the bushing 5 and the knob 37 as illustratedv inA my co-pending application, Serial No. 252,898, filed February 8, 1928, said washeroperating to prevent rotation of either the bushing or knob relative to the stem. e

A bolt actuating stem 42 isA mounted within a groove V43 formed longitudinally along the `knob stem 1. An extension isV carried upon the inner end of the stem 42', said extension consisting` of an outwardly extending arm 46protruding fromv the groove and having'a curved portion 47 concentric with tne stem 1 and engaging a hook-like extension 48* carried by one of the armsv of the U shaped locking member 14, asshown inFigs. 1, 27 and v3 of the drawings,Y The curved portion 47 is preferably madea complete annulus extending around the. knob Y stem 1 whereby said knob stem and the stem 42 with its extension maybe rotated by the inner knob 37 independently 'of the locking member 14 and outer knob 29, and without disengaging said locking member. The portion 47 is formed upon a radius such that the said portion vmay be moved past the collar 19.V i

A sleeve 48 is slidably mounted Vwithinthe outer end Vof the knob sleeve 38 and threaded onto the outer end of the actuating stem 42. A knurled ,ange 49 is formed upon the outer end of the sleeve 48 whereby the sleeve may be rotated to move the stem 42 longitudinally within thegroove 43 of the stem 1.

4A rosette 51 is mounted around the end of the bushing V5 and covering the bearing plate 8, said rosette engaging lugs 52 formed upon said plate 8 and being retained in an operative position bythe washer 41.

In operation, my improved knob locking Vdevice is assembled upon a door in the following manner. The locking member 14, with the spring 17 mounted upon the guide 18, is Vinserted to operative .position upon the bushing 4 with the` arms of the U shaped member 14Y received within the grooves 11. The knob 29 and lock 31 are then secured to the bushing, and the bushing moved into engagement with the bearing plate 7, said plate 7 having been secured to the door and the rosette. 23 positioned thereon previously. The extensions 1G are moved through .the grooves 12 to admit the bushing 4 to operative positionrelativeto the mounting plate Cil `and threaded into the bushing 4. The sp 7. The stem 1 is then inserted through the opening 2 from the inner side of the door rin 17 is compressed between the stem 1 and th closed end of the member 14, and the collar 19 is moved to a position slightly spaced from the inner end of the bushingc4. Y

The actuating stem 42 is inserted into operative position upon'the knob stem 1 engaging the hook portion 48 of the member 14, said stem 1 is screwed into the. bushing 4. VThe bushing 5 is then threaded onto the inner end of the knob stem 1 and yadvanced into operative relation to the bearing plate 8.V The rosette-51 is next applied and the washer 41 tted onto the stem v1 and the knob 37 secured upon the extreme outer end of the stem by screwing the sleeve 38 onto the stem l until the ridged washer 41 is clamped between the knob and the bushing outer end of the sleeve 38 and turned onto the threads of the actuating stem 42. The sleeve 48 is normally adjusted to a position such that the outer flange 49 seats against the end of the sleeve 38 when the stem 42 is moved inwardlycwith the locking member 14 to its normal locking position as indicated in dotted lines in Fig. 2 or" the drawmus.

2lVith the device assembled upon the door asv above describedthe locking member 14 is normally held in locking position by the spring 17, the extensions 16 being received within the matching grooves v11 and 12 to lock the outer knob29 and bushing 4 against rotation. The stem 1, being threaded into the bushing 4, may be turned wit-hin said bushing, thus permitting the opposite knob 37 and the stem 1 to be turned from the inside of the door, independently of the locking ot the outer knob. The stem 1 is adapted to be connected to any suitable latch mechanism, such as commonly installed in doors, but as such latch mechanism forms no part of the present invention, and the spe'- ciic form and construction of said mechanism may be of practicallyy any standard construction, no disclosure of said latchcmechanism has been included herein. Thus, by locking the outer knob against rot-ation, the

operation oit' the stem 1 by the outer knob to release the latch mechanism is prevented, and theV door will be eiectually locked against opening from the outside. At-the saine time, the stem 1 is freely operable by the inner knob to permit the opening of the door from the inside at will. c

To open the door from the outside, a proper key'36 is-inserted into the lock 31 and a half turn imparted to the cylinder of the lock in the well known manner. As the cylinder is thus turned, the cam 34 will be moved to force vthe locking member 14 inwardly against the pressure of the. spring o. The sleeve 48 is then insertedinto they 17, the amount'of movement being designed tocause the extensions 16 to be moved out of engagement with the grooves 11 and 12, thereby permitting free rotation of the knob and bushing 4 within the bearing plate' 7. At the same time, the ends of the member 14 are movedinto the notches 21 of the lcollar19 carried by, the knob stem 1, Vwhereby a rotation of the knob and bushing will cause the member 14to also rotate the collar 19 and stein 1, thereby actuatingsaid stem 1 to operate the latch mechanism. The movement of the cam 34 and the cylinder of the lock is limited by shoulders y53 and 54 formed adjacent the high and low portions of the inclined end ofthe cam, said shoulders being adapted to .engage the sides of the member 14 and limit the rotation of the cam and cylinder to a half revolution. The cylinder must be turned'to allow the locking member to be returned to -itslocking position before Vthe key 36 can be withdrawn, thus insuringthat the outer knob will be normally locked.

when the cam; is moved to release the same'l thus permitting either knob tol be freely turned to operate the latch mechanism.- In case the locking member 14 is inA locking position and it is desired to move it to unlocking position from the inside-of the door, the sleeve v48 is rotated to move the stein 42 into-said sleeve,I the flange 49 being seated against the sleeve k38 and the threaded pori tion of the stem 42 being advanced intothe sleeve 48 as saidsleeve is rotated, and thereby moving the locking member 14-to its unlocking position.

lf'vvlien the locking memberrl4 is movedy lVhile I have `illustrated' and," described Sii only the preferred embodiment of my invention, the specificdetails of construction and arrangement are subject to modification in numerous ways'without departing -rom the spirit or" my invention. `I therefore dei' sire f to avail myself of all modifications which may fall within the scopeo the appended claims. Q f o Having thus described my invention, what I claim as ynew anddesire to securebyLetif ters Patent is l 1. A locking device comprising, a knob stein extending through a door and adapted to be partially'ro'tated to actuate latch mechanism mounted within the door;a bearing platesecuredupon one side of the door; a bushing rotatably mounted Within the bearing plate and engaging one end ofthe knob stem; a locking member `slida'bly mounted in connection with the bushing and. movable into locking engagement With the bushing and bearing plate `to locky said bushing against rotation-When said member is ina locking position; said locking member being disengaged from the stem When in a locking position and being movable into actuating engagement With the `stem when said member is moved to an unlocking position; means mounted in connection With the locking m'ember for normally moving the same to a locking position; a knob secured to'the bushing; and key actuated means mounted Within the outer endl oi the knob for movinglthe locking member to unlocking position. Y Y '2. A locking device comprising arknob stem extending through a door andadapted to be partially rotatedto actuate latch mechanism mounted Within the door; a bearing plate secured upon one side of the door; a bushing rotatably mounted within the bearing plate and engaging one end of the knob stem; a locking'memberfslidably mounted in connection with the *bushing and movable Yinto locking engagement with the bushing and bearing plate to lock said bushing against rotation when said member is in a locking position, said locking member being-disengaged from the stem AWhenin locking position` and beingmovable into actuating engagement with the stem When said member' is moved to an unlocking position; vmeans mounted inY connection Withthe locking member for normally moving the sameV to a locking position; a knob secured to the bushing; key actuated means mounted Within t the outer end of the knob tor-moving the locking-member to unlocking position; and means operable from the opposite end of the stem 'for moving the locking member to imlocking position.-

Y Y Y `3. AV locking device comprising arknob stem extending through a door and adapted to be partially rotated to actuate latch'mechl anism mounted "Within the door; a bearing plate secured uponone side ofthe door; a bushing rotatably Vmounted Within the bearing plate and engagingone end of the knob stem; a locking member slidably mounted 1n connection With the bushing Vand movableJ into locking engagement with the bushing and bearing plate to lock said bushing against rotation when said member isin a lockingpositiomsaid locking member being disengaged-from the stem when in locking position and being movable into actuating engagement with the stem When said member is moved to an unlocking position; means mounted in connection With fthe locking 'member for normallyy moving `the-same to a locking position; a knob secured' to the bushing; keyA actuated means mounted Within the outer end of the4 knob for moving the locking member to unlocking position; and means `mounted Within the stem and manually operable from the opposite end thereof for moving Ythe locking member lto an unlocking position. t. Y

4. locking' device comprising 'a knob stem extending through a door and adapted to be partially rotated to actuate'latch mechanism mounted Within the door;va bearing plate secured upon one side of thedoor; a bushing rotatably mounted within the bearin g plate and engagingv onelendof theknob stem; a'locking member slidably mounted in connection with the"bushing and movable into locking engagement `With the bushing and Vbearing plate to 'lock said bushing against rotation When said member isin-fa Vlocking position, said locking member beingl disengaged 'from the stemwhen in locking vposition vand being movable into actuat-Y ing engagement with the-stem when saidmember is moved vto an unlocking position; means mounted in connection-With the lock- -ing -member for normally moving the same to arlocking position; a knob secured tothe bushing; key actuated meansmounted Within the outer end of the knob for moving the locking member to unlocking position; an actuating stem slidably mounted Within-the knob stem and extendingV outwardly Vfrom the opposite end thereof, said actuating stem having'v its inner endengaging the locking member; and means engaging the outer end of the actuating stemV and manually operable for moving saidstem and the locking member to unlocking position.

5. A locking device comprising a knob stem extending through a door and adapted to be partially rotated to actuate latch 'mechanism mounted Within the door; a bearing plate secured upon one side of the door; a bushingv rotatably mountedvvithin the bearing plate and engaging one end oliA the knob stem; a locking member slidablyv mounted in connection With thei-bushing and movable into locking engagement With the bushing and/bearing plate to lockk said bushing against rotation when saidmember is in -a locking position;` said vlocking member also bei-ng `movable into actuating engagement 10 ing plate and engaging one end of the knob stem; a locking member slidablymounted in connection with the bushing and movable into locking engagement with the bush-V ing and bearing plate to lock said bushing 15 against rotation when said member is in a locking position, said locking member also being kmovable into actuating engagement with; the stemV when said member is movedv to an unlocking position; meansmountedin 20 connection with the locking member for normally moving the same'toa locking position; a knob secured to the bushing; key actuated means mounted Ywithin the outer end of the knob or'moving the locking mem- 25 ber tofunlocking position; a knoby mounted upon the opposite end of the knob stem, said knob being provided with an axial sleeve engaging said knob, stem; an actuating stem slidably mounted within the knob stem and engaging the locking member; and an actuating sleeve threaded onto the outer end of the actuating stem and slidably engaging the outer end of the knobsleeve for moving said stem and the locking member to unlocking position, said actuating sleeve andfstem being slidably movable with the locking member when moved by the key actuated means. v v Y7. A locking device comprising a knob -40 stem extending through a door and adapted to be partially rotated to actuate latch mechanism-mounted within the door, said stem being'provided with 'a collar; a bearing plate secured upon one side of the door; a bushing. rotatably mounted within the bearing plate'and engaging one end of the knob stem, said bushing having longitudinally disposed grooves adapted to register with corresponding groovesformed within the bearing plate; a locking member Vslidably mounted within the grooves of the bushing and provided with extensions movable to engage the grooves to the bearing plate to lock. the bushing againstkrotation 'when :the locking member is'in a locking position, saidextensions alsobeing movable into actuating engagement with the collar carried by the stem for rotating said stem whenthe locking member is moved to unlockingposition; means for normallymoving' the locking member to locking position; a knob secured to the bushinga keyl actuated cylinder lock mounted within the outer end of the knob' and a cam mounted in .35 connection with thecylinder lock and movVd ber Vfrom normal locking position to unlocking position.

8. A locking device comprising a knob stem extending through a door-and adapted able therewith to displace the locking memto be partially rotated to actuate latch mechanism mounted within the door7 said. stem being provided with a collar; a bearing plate secured upon one side ofthe door; a. bushing rotatably mounted within the bearing plate and engaging one end o-the knob stem, said bushing having longitudinally disposed grooves adapted to registel` with corresponding grooves formed within thev bearing plate; a locking member slidablyy mounted withinthe grooves of the i bushing and provided with extensions movable to lengage the grooves of the bearing plate to lock the bushing against rotation when the locking member is in a locking position, said extensions also being movable into actuating engagement with the collar carriedby the stem for rotating said stem when the lockingv member is moved to unlocking position; means for normally moving the locking member to locking position; a knobv secured to the bushing; a key actuated cylinder lock mounted within the outer end of the knob; a cam mounted in connection with the cylinder lock and movable therewith-to displace the locking member from normal locking position to unlocking position; and means formed upon the cam for limiting the rotation of the .cylinder lock and the cam.

9. A locking device comprising a knob stem extending through'al door and adapted to be partially rotated to actuate latch mechanism mounted within theIdoor; said stem being'provided with a collar; la bearing plate secured upon one side of the door; a bushing rotatably mounted within the bearing plate and engaging one end of the yknob stem, said bushing-having longitudinally disposed grooves adapted to register with corresponding grooves ormed'withthe bearing plate; a locking member slidably locking position; means for normally mov-` ingthe locking member to locking` position; a knob vsecured to the bushing; a key actuated cylinderv lock` mounted l within the outer end of the knob; and a hollow cylindrical cam secured upon the cylinder of the lock and rotatable therewith; thee'nd of said cambeing inclined and engaging the adjacent v,end ci?v the locking-membertor 1 moving `said member from normall lockingA stem extending through a door and adapted to be partially rotated to actuate latch mech- -anism mounted Within the door, said stem being provided With a collar; a bearing plate secured upon one side of the door;

i a bushing' rotatably mounted Within the bearingplate and engaging one end of the lknob stein, said bushing having longitudinally disposed grooves adapted to register With. corresponding grooves formed VWithin the bearing plate; a locking member slidably mounted Within the grooves of the bushing and provided with extensions mov-r able to engage thel grooves of thev bearing plate to lock the bushing against rotation When the locking member is inv a locking position, said extensions also being movable into actuating engagement With the collar carried by the stem for rotating said stem when the locking member ismoved to unlocking position; means for normally moving the locking member to locking position; a knob secured to thebushing; a key actuated cylinder lock mounted Within the outer end oil the knob; a hollow cylindrical Vcam secured upon thecylinder of the lock and rotatable therewith7 the end of said cam being inclined and: engaging the adjacent end of the locking member forV movingVV said member from normal lockingl position to unlocking position; and'shoulders formed upon the inclined end of the cam adjacent the extreme high and low points thereof to engage the sides of the locking member land thereby limitY the rotative movement of the cam and the cylinder lock. j

11. A locking device comprising aknob n stem extending through 'a door andv adapt-ed to be partially rotated to actuate latching mechanism mounted Within the door, said stem being provided With a collar and having a groove extending longitudinally thereof; bearing plates secured` upon opposite sides* ot' the door; bushings engaging the stemV androtatably supported Within the bearing plates, the'bushing uponl the outer side of the door having longitudinallyv disposed grooves adapted to register With corresponding grooves formed in the adjacent bearing plate; a U shaped locking member- Y slidably mounted inthe bushing'grooves and provided with/extensions movable to engage the grooves of thel bearing'pl'ate when in alocking position and also movable into actuating engagement With the collar carried'by Y the stemwhen said locking'member is moved to `an unlockingv position; -means forf normally moving'the locking member to locking position; knobs secured to the bush`l ings; Vkey actuated meansV mounted Within the outer knob and engagingthe locking member for moving'said member fromno'rposition to unlocking position; an actuating4 stem slidably mounted Within the j groove of the knob stem' and engaging the locking member; said actuating stemV extending into'the inner knob; and means mounted` 70 within the end of the knob and engaging the actuating stem for moving said stem and the locking member to unlocking position.

l2. In a knob locking device, the combination With a knob stem extending through a door and adapted to operate latching mechanism byY a rotative movement of said stem, of a locking member slidably mounted adjacent the outer vend of the stem, said member being normallyV held in atlocking positionl to' prevent rotationof the stem from outside' the door; key actuated means operable from outside the door for Vmoving the locking member to unlocking position; an actuating stem slidably mounted 'Within the knob stem; an extension formed upon the inner end oty the stem and engaging the locking member; and manually operable means engaging the other end of said stem for moving said stem and the locking member to 90 unlocking position independently of the key actuated means. I g

13. In a knob lockingdev'ice, the combination With a knob stem extending through'a r door and adapted' to rvoperate Y latching 9 mechanism'by a rotative .movement ofV said stem, of a locking member slidably mounted; adjacent the outer end' of thel stem, said member being normally held in at locking position to prevent rotation of thestemj100 from outside the door; key actuated' means" operable from'outside the doorfor moving the locking member tounlocking position; an actuating stem slidably mounted within a groove longitudinally disposedV along'the 105 knob stem; an extension formedv upon the inner end of the stemI and engaging the locking member, Saidv 'extension' being, adapted to permit rotation of the knob' stemJ independently of the'locking member When yi0 said 'stem is turned' from the inner side of the door; and manually-operable means for moving the actuating stem longitudinally Within the knob: stem-to moveV the locking member'to unlocking position independently of the key actuatedlmeans. v

` 14. In a knob'locki'ngdevic'e, the combinationvvithfa bearing plate and a bushing rotatably mounted Within said plate and1 having grooves ,registeringV with grooves formed in the plate; of a locking member slidably mounted within; the bushingand movable to engage the registering grooves to prevent rotation of1 the bushing; means' i normally moving the locking` member' to a locking. position; and a key actuated ca'm engaging the` locking member and' operable to move said `llocking'member tb an unlockingposition;l said caml Vcomprising al hollow 30 cylindrical extension secured to the cylinder of a cylinder lock and having an inclined end engaging the end of the locking member, a portion of the end of said locking 5 member being received Within the tubular body of the cam When said member is engaged by a 10W point of the inclined cam surface.

15. In a knob locking device, the combina- 10 tion with a bearing plate and a bushing rotatably mounted Within said plate and having grooves registering with grooves formed in the plate, of a locking member slidably mounted Within the bushing and 15 movable to engage the registering grooves torprevent rotation of the bushing; means normally moving the locking member to a looking position; a key actuated cam engaging the locking member and operable to .w move said locking member to an unlocking position, said cam comprising a hollow cylindrical extension secured to the cylinder of a cylinder lock and having an inclined end engaging the end of the locking member, the end of said locking member being received Within the tubular body of the cam when said member is engaged by a low point of lthe inclined cam surface; and shoulders formed adjacent the high and 10W points of m, the inclined cam surface to engage the locking member and limit the movement of the cam.

In Witness whereof, I hereunto setmy signature.

Y, 35 o ELLING ELLINGsoN. 

